Hardness and strength are two properties of metals that increase as increases.

A-temperature
B-the number of delocalized electrons
C-atomic mass
Dthe distance between cations

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

the answer for sodium is 0.186

the answer for rubidium is 0.251

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.